Model selection method and device of electric dust removal equipment, electronic equipment and storage medium

Abstract

The invention discloses a model selection method and device of electric dust removal equipment, electronic equipment and a storage medium, the method and device are applied to the electronic equipment, and specifically, multiple flue gas characteristic parameters are obtained; determining a technical form according to the plurality of flue gas characteristic parameters; calculating a dust collection area required by the electric dust removal equipment according to the flue gas characteristic parameters; and performing model selection according to the dust collection area, one or more basic parameters in the plurality of flue gas characteristic parameters and the technical form to obtain the model of the required electric dust removal equipment. According to the method, the appropriate electric dust removal equipment is selected based on the actual requirement of the industrial dust removal working scene, the inherent defect that model selection is conducted depending on subjective experience is avoided, and therefore the problem that emission of the industrial dust removal equipment selected through an existing design method cannot meet the environmental protection requirement is solved.

Description

Technical Field

[0001] This application relates to the field of environmental protection technology, and more specifically, to a method, apparatus, electronic device, and storage medium for selecting the model of an electrostatic precipitator. Background Technology

[0002] Electrostatic precipitators (ESPs) are widely used in industrial dust removal applications such as flue gas treatment in coal-fired power plants, blast furnace gas purification in steel plants, and kiln tail gas treatment in cement plants, due to their technological advantages including large flue gas processing capacity, high dust removal efficiency, strong dust adaptability, stable operation, and low maintenance. To ensure good dust removal performance, the model of the ESP needs to be determined at the initial design stage of the work environment; specifically, its operating parameters need to be defined. However, currently, the selection of ESPs is often based on subjective experience, frequently resulting in emissions failing to meet environmental protection requirements. Summary of the Invention

[0003] In view of this, this application provides a method, apparatus, electronic device and storage medium for selecting the model of an electrostatic precipitator, for selecting a suitable electrostatic precipitator according to the actual needs of industrial dust removal work scenarios, so as to solve the problem that the emissions of industrial dust removal equipment selected by existing design methods cannot meet environmental protection requirements.

[0004] To achieve the above objectives, the following solution is proposed:

[0005] A method for selecting the model of an electrostatic precipitator, applied to electronic equipment, the method comprising the following steps:

[0006] Obtain multiple flue gas characteristic parameters;

[0007] The technical form is determined based on the aforementioned multiple flue gas characteristic parameters;

[0008] Calculate the required dust collection area for the electrostatic precipitator based on the aforementioned multiple flue gas characteristic parameters;

[0009] The required electrostatic precipitator model is obtained by selecting based on the dust collection area, one or more basic parameters among the multiple flue gas characteristic parameters, and the technical form.

[0010] Optionally, the plurality of flue gas characteristic parameters include some or all of the following: inlet dust concentration, inlet flue gas flow rate, inlet flue gas temperature, coal consumption, outlet dust concentration, and efficiency requirements.

[0011] Optionally, the technical form can be a conventional technical form or a coupled technical form.

[0012] Optionally, calculating the required dust collection area for the electrostatic precipitator based on the flue gas characteristic parameters includes the following steps:

[0013] The apparent infeed velocity is selected from the existing electrostatic precipitator selection and design specifications based on the flue gas characteristic parameters.

[0014] Calculate multiple efficiency improvement influencing factors and high-voltage power supply selection correction coefficients;

[0015] The dust collector efficiency formula is determined based on the multiple efficiency-improving influencing factors, the correction coefficient, and the apparent driving velocity.

[0016] Calculate the required dust collection area for the electrostatic precipitator based on the dust collector efficiency formula.

[0017] Optionally, the plurality of efficiency-improving factors include the efficiency-improving factors of the condensing airflow distribution plate, the multi-effect pretreatment system, the dust suppression device, the vertical dust suppression and collection devices at the tail of each electric field, the small-shutdown isolation rapping system, the high-voltage power supply selection correction coefficient, the efficiency-improving factors of the new polarity configuration of the front-stage electric field, the efficiency-improving factors of the new polarity configuration of the intermediate electric field, and the efficiency-improving factors of the new polarity configuration of the rear-stage electric field.

[0018] Optionally, the dust removal efficiency formula is:

[0019]

[0020] Wherein, η is the dust removal efficiency of the electrostatic precipitator, K1 is the efficiency-enhancing factor of the condensing airflow distribution plate, K2 is the efficiency-enhancing factor of the multi-effect pretreatment system, K3 is the efficiency-enhancing factor of the flow-guiding dust suppression device, K4 is the efficiency-enhancing factor of the vertical dust suppression and collection device at the tail of each electric field, K5 is the efficiency-enhancing factor of the small-shutdown isolation rapping system, K6 is the high-voltage power supply selection correction coefficient, K7 is the efficiency-enhancing factor of the novel polarity configuration of the front-stage electric field, K8 is the efficiency-enhancing factor of the novel polarity configuration of the intermediate electric field, K9 is the efficiency-enhancing factor of the novel polarity configuration of the rear-stage electric field, e is the natural constant, and ω k The apparent driving velocity is in m / s, and A is the dust collection area in m². 2 Q is the flue gas inlet flow rate, in m³ / s. 3 / s.

[0021] Optionally, the required electrostatic precipitator model is obtained by selecting based on the dust collection area, one or more basic parameters among the plurality of flue gas characteristic parameters, and the technical form, including the following steps:

[0022] Select the number of columns required for each boiler electrostatic precipitator, the number of chambers required for each column of electrostatic precipitators, the electrode height required for each electrostatic precipitator, the effective length of a single electric field, and the number of electric fields required for each electrostatic precipitator;

[0023] The number of electric field channels is calculated based on the number of columns, the number of chambers, the height of the electrode plate, the effective length of a single electric field, and the number of electric fields.

[0024] Select the same pole spacing and the effective width of the single-cell electric field;

[0025] The required model of the electrostatic precipitator is obtained by combining the dust collection area, the electrode plate height, the number of chambers, and the number of columns.

[0026] A model selection device for electrostatic precipitators, applied to electronic equipment, the model selection device comprising:

[0027] The parameter acquisition module is configured to acquire multiple flue gas characteristic parameters;

[0028] The technology determination module is configured to determine the technology form based on the plurality of flue gas characteristic parameters;

[0029] The parameter calculation module is configured to calculate the required dust collection area of ​​the electrostatic precipitator based on the multiple flue gas characteristic parameters.

[0030] The selection execution module is configured to select the model of the required electrostatic precipitator based on the dust collection area, one or more basic parameters among the plurality of flue gas characteristic parameters, and the technical form.

[0031] An electronic device includes at least one processor and a memory connected to the processor, wherein:

[0032] The memory is used to store computer programs or instructions;

[0033] The processor always executes the computer program or instructions to enable the electronic device to implement the model selection method as described above.

[0034] A computer-readable storage medium is applied to an electronic device, the storage medium carrying one or more computer programs that can be executed by the electronic device to enable the electronic device to implement the model selection method as described above.

[0035] As can be seen from the above technical solution, this application discloses a method, apparatus, electronic device, and storage medium for selecting the model of an electrostatic precipitator. This method and apparatus are applied to an electronic device, specifically involving: acquiring multiple flue gas characteristic parameters; determining the technical form based on the multiple flue gas characteristic parameters; calculating the required dust collection area of ​​the electrostatic precipitator based on the flue gas characteristic parameters; and selecting the appropriate model of the electrostatic precipitator based on the dust collection area, one or more basic parameters from the multiple flue gas characteristic parameters, and the technical form. This application selects a suitable electrostatic precipitator based on the actual needs of industrial dust removal scenarios, avoiding the inherent defects of relying on subjective experience for selection, thereby solving the problem that the emissions of industrial dust removal equipment selected by existing design methods cannot meet environmental protection requirements. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a flowchart illustrating a method for selecting the model of an electrostatic precipitator according to an embodiment of this application;

[0038] Figure 2 The current-voltage characteristic curves of three types of cathode wires—needle wire, RS wire, and CS66D—are shown in the embodiments of this application.

[0039] Figure 3 The current-voltage characteristic curves of the three types of cathode wires—CS12C, wave line, and spiral line—are shown in the embodiments of this application.

[0040] Figure 4 This is a flowchart illustrating a method for selecting the model of an electrostatic precipitator according to an embodiment of this application;

[0041] Figure 5 This is a block diagram of an electronic device according to an embodiment of this application. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0043] This application proposes a method for selecting and calculating electrostatic precipitators using a combination of new technologies and processes. Through extensive experimental research and engineering verification, it derives the impact factors of various new technologies and processes on dust removal efficiency, thereby accurately calculating the required dust collection area of ​​the electrostatic precipitator after implementing these technologies and processes. The related coupling technologies include: a condensing airflow distribution plate efficiency improvement technology installed at the inlet horn position to replace the existing flat-plate airflow distribution plate to improve airflow uniformity and achieve dust agglomeration; a multi-effect pretreatment efficiency improvement technology installed at the inlet horn position to pre-charge dust particles and pre-capture some large dust particles; a flow-guiding dust suppression efficiency improvement technology installed at the bottom of the electric field to suppress flue gas velocity and prevent flue gas corridors; and various electric field tail sections installed at the tail end to prevent secondary dust generation from rapping and possessing certain dust collection performance. The present application provides the following specific embodiments based on the above: vertical dust suppression and collection efficiency improvement technology; small-shutdown isolation rapping efficiency improvement technology installed at the tail of the last electric field to achieve individual airflow isolation in each channel to suppress secondary dust generation during rapping; high-efficiency power supply efficiency improvement technology; a new type of polarized efficiency improvement technology for the front-stage electric field using the CS66D new cathode wire with strong discharge capability and extremely strong dust accumulation resistance; a new type of polarized efficiency improvement technology for the intermediate electric field using needle-punched wire and auxiliary AI high-frequency power supply; and a new type of polarized efficiency improvement technology for the rear-stage electric field using the CS12C new cathode wire with the strongest secondary voltage field strength.

[0044] Figure 1 This is a flowchart illustrating a method for selecting the model of an electrostatic precipitator according to an embodiment of this application.

[0045] like Figure 1 As shown, the model selection method provided in this embodiment is applied to electronic equipment to select a model of electrostatic precipitator suitable for a specific production scenario. This electronic equipment can be understood as a computer, server, or cloud platform with data computing and information processing capabilities. The model selection method specifically includes the following steps:

[0046] S1. Obtain multiple flue gas characteristic parameters.

[0047] Multiple flue gas characteristic parameters include some or all of the following: inlet dust concentration, inlet flue gas flow rate, inlet flue gas temperature, coal consumption, outlet dust concentration, dust removal efficiency requirements, coal quality parameters, and ash content parameters.

[0048] S2. Determine the technical form based on multiple flue gas characteristic parameters.

[0049] The technical forms involved in this application are either conventional or coupled technical forms. Based on specific needs, this application has selected the coupled technical form.

[0050] S3. Calculate the required dust collection area for the electrostatic precipitator based on the flue gas characteristic parameters.

[0051] The specific process includes the following:

[0052] First, based on the coal quality parameter and ash content parameter among the above-mentioned multiple flue gas characteristic parameters, the apparent driving velocity ω is selected from the existing electrostatic precipitator selection and design specifications. k The electrostatic precipitator selection and design specifications in this application refer to the contents shown in the table below:

[0053]

[0054]

[0055] Table 1

[0056] Then, calculate multiple efficiency improvement factors and high-voltage power supply selection correction coefficients.

[0057] The efficiency improvement factors in this application include the efficiency improvement factors of the condensing airflow distribution plate, the multi-effect pretreatment system, the flow guiding dust suppression device, the vertical dust suppression and collection device at the tail of each electric field, the small shutdown isolation rapping system, the high-voltage power supply selection correction coefficient, the efficiency improvement factors of the new polarity configuration of the front-stage electric field, the efficiency improvement factors of the new polarity configuration of the intermediate electric field, and the efficiency improvement factors of the new polarity configuration of the rear-stage electric field.

[0058] 1. The calculation method for the efficiency improvement factor K1 of the condensing airflow distribution plate is as follows:

[0059]

[0060] Wherein, Δδ is the improvement value of airflow uniformity under the same opening ratio, and its value ranges from 1 to 1.5 according to CFD airflow simulation test research and field working condition verification research; W1% is the opening ratio of the orifice plate, which is selected from 30% to 35%; D is the wave height of the condensing airflow distribution plate, and its value ranges from 0.05 to 0.07 according to the structural strength verification; θ is the condensation angle, and its value ranges from 50° to 65°.

[0061] 2. The calculation method for the efficiency improvement impact factor K2 of the multi-effect pretreatment system is as follows:

[0062]

[0063] Among them, W1% is the orifice plate opening ratio, which is selected from 30% to 35%; θ is the coagulation angle, which ranges from 50° to 65°; W2% is the effective utilization improvement rate of the dust collection area of ​​the first electric field, which is selected from 5% to 15%.

[0064] 3. The calculation method for the efficiency improvement factor K3 of the dust suppression and diversion device is as follows:

[0065] K3 = W3% + W4%,

[0066] Among them, W3% is the influence coefficient of the pre-flow guiding dust suppression device, which is selected from 40% to 50%, and W4% is the influence coefficient of the streamlined guiding dust suppression device, which is selected from 30% to 45%.

[0067] 4. The calculation method for the efficiency improvement factor K4 of the vertical dust suppression and collection devices at the tail end of each electric field is as follows:

[0068]

[0069] Among them, W5% is the opening rate of the vertical dust suppression and collection device, which is usually controlled at 30% to 40%; C is the effective dust suppression width of the vertical dust suppression and collection device, which is determined by CFD airflow simulation based on the channel width and is selected from 30mm to 50mm; E is the effective width of the electrode plate, and the effective width of the electrode plate of the mainstream dust collectors is 475mm and 500mm respectively; F is the height of the windproof hook of the electrode plate, which is usually selected from 20mm to 30mm.

[0070] 5. The calculation method for the efficiency improvement impact factor K5 of the small-disconnection isolation rapping system is as follows:

[0071]

[0072] Wherein, H1 is the height of the guide vane along the first fold of the small shut-off isolation rapping system, selected from 135mm to 180mm; α is the guide vane angle along the first fold, selected from 1.8° to 2.5°; H2 is the height of the guide vane along the second fold of the small shut-off isolation rapping system, selected from 60mm to 70mm; β is the guide vane angle along the second fold, selected from 8.5° to 10°; T is the final electric field pole distance, selected from 350 to 450mm; W6% is the dust interception rate of the small shut-off rapping system, which is ≥98% according to CFD airflow simulation and field verification, and is taken as 98%; W7% is the dust interception rate of the conventional trough plate, which is approximately 55% to 60%.

[0073] 6. Here, the high-voltage power supply correction factor K6 is selected based on the type of high-voltage power supply. The selection method is as follows:

[0074] High-voltage power supplies include power frequency power supplies, high frequency power supplies, variable frequency power supplies, three-phase power supplies, and pulse power supplies. Based on extensive engineering experience, the corresponding correction factor K6 is selected as follows: power frequency power supply: 1.0, high frequency power supply and variable frequency power supply: 0.97, pulse power supply: 0.9, three-phase power supply: 0.98.

[0075] 7. The calculation method for the efficiency improvement factor K7 of the novel electrode matching of the front-stage electric field is as follows:

[0076]

[0077] Among them, UI n To determine the output power using a specific cathode wire under a given voltage U, the value is taken as a reference. Figure 2 The voltage-current characteristic curves shown are defined as follows: UI1 represents the output power of the needle wire, UI2 represents the output power of the RS barbed wire, and UI3 represents the output power of the CS66D cathode wire. δ n To determine the uniformity of the plate current density distribution when using a certain cathode wire, the values ​​are shown in Table 2, where δ1 represents the uniformity of the plate current density distribution of the needle-punched wire, δ2 represents the uniformity of the plate current density distribution of the RS barbed wire, and δ3 represents the uniformity of the plate current density distribution of the CS66D cathode wire.

[0078]

[0079] Table 28 shows the calculation method for the efficiency improvement factor K8 of the novel intermediate electric field polarity:

[0080]

[0081] Among them, U n I represents the output power when a certain cathode wire is used under a constant current I. The value is determined by reference to... Figure 1 The current-voltage characteristic curves (defined as U1I as the output power of the needle wire, U2I as the output power of the RS barbed wire, and U3I as the output power of the CS66D cathode wire) δ n To determine the uniformity of the plate current density distribution when using a certain type of cathode wire, the values ​​are defined in Table 2 (δ1 is the uniformity of the plate current density distribution of the needle wire, δ2 is the uniformity of the plate current density distribution of the RS barbed wire, and δ3 is the uniformity of the plate current density distribution of the CS66D cathode wire).

[0082] 9. The calculation method for the efficiency improvement factor K9 of the novel electrode matching in the subsequent electric field is as follows:

[0083]

[0084] Among them, U n I represents the output power when a certain cathode wire is used under a constant current I. The value is determined by reference to... Figure 3 The voltage-current characteristic curves shown are defined as follows: U4I represents the output power of the waveform line, U5I represents the output power of the spiral line, and U6I represents the output power of the CS12C flexible line. δ n To determine the uniformity of the plate current density distribution when using a certain cathode wire, the values ​​are shown in Table 2. Among them, δ4 is the uniformity of the current density distribution of the waveform wire plate, δ5 is the uniformity of the current density distribution of the spiral wire plate, and δ6 is the uniformity of the current density distribution of the CS12C flexible wire plate.

[0085] Next, the existing dust collector efficiency formula was modified based on multiple efficiency-improving factors, correction coefficients, and apparent driving velocity to obtain the modified dust collector efficiency formula. The formula is shown below:

[0086]

[0087] Where η is the dust removal efficiency of the electrostatic precipitator, K1 is the efficiency improvement factor of the condensing airflow distribution plate, K2 is the efficiency improvement factor of the multi-effect pretreatment system, K3 is the efficiency improvement factor of the flow-guiding dust suppression device, K4 is the efficiency improvement factor of the vertical dust suppression and collection device at the tail of each electric field, K5 is the efficiency improvement factor of the small-shutdown isolation rapping system, K6 is the high-voltage power supply selection correction coefficient, K7 is the efficiency improvement factor of the new polarity configuration of the front-stage electric field, K8 is the efficiency improvement factor of the new polarity configuration of the intermediate electric field, K9 is the efficiency improvement factor of the new polarity configuration of the rear-stage electric field, e is the natural constant, and ω k The apparent driving velocity is expressed in m / s, and A is the dust collection area in m². 2 Q represents the flue gas inlet flow rate, in m³ / s. 3 / s.

[0088] Finally, the required dust collection area A for the electrostatic precipitator is calculated based on the dust collector efficiency formula.

[0089] In the above formula, all parameters except the dust collection area are known. Therefore, the dust collection area can be calculated by following the formula above.

[0090] S4. Select the appropriate model based on the dust collection area and multiple flue gas characteristic parameters.

[0091] Based on the calculated dust collection area A and combined with basic parameters such as flue gas volume Q and flue gas temperature, a suitable electrostatic precipitator model and specification are selected. In this calculation process, the unit size is classified according to the coal-fired power plant unit levels, namely 300MW, 600MW, and 1000MW, etc. The selection principles are as follows:

[0092] 1) First, select the number of columns (units) N1 of the electrostatic precipitators corresponding to each boiler: preferably, units below 300MW are selected by a single column (unit), and units of 300MW and above are selected by 2 columns (units);

[0093] 2) Next, select the number of chambers K for each column (each unit) of electrostatic precipitator: preferably, select 2 chambers for 300MW to 600MW class, and select 3 chambers for class above 600MW;

[0094] 3) Selection of the electrode plate height H in the dust removal chamber of each column of point dust collector: Preferably, for 300MW and above units, it is selected as 15m; alternatively, under special operating conditions, it can be selected as 15.5m.

[0095] 4) Selecting the effective length L of a single electric field: If BE plates are used, preferably, the number of plates is selected as 8, 9, 10, or 12, and the lengths are 3.8m, 4.275m, 4.75m, and 5.7m, respectively. Alternatively, in situations where the site is limited, 6 or 7 plates can be selected, and the lengths are 2.85m and 3.325m, respectively. If 480C plates are used, preferably, the number of plates is selected as 6, 7, 8, 9, or 10, and the lengths are 3m, 3.5m, 4m, 4.5m, and 5m, respectively. Alternatively, in situations where the site is limited, 4 or 5 plates can be selected, and the lengths are 2m and 2.5m, respectively.

[0096] 5) Selecting the number of electric fields N2: Preferably, 4 to 5 electric fields are selected. Optionally, for special working conditions such as high inlet concentration and high dust removal efficiency, the number of electric fields can be greater than 5.

[0097] 7) After the above technical parameters are determined, calculate the number of electric field channels N3 using the following formula:

[0098]

[0099] In the formula, A is the total dust collection area; N1 is the number of columns (units); K is the number of chambers; H is the electrode height; L i N is the effective length of the i-th electric field; N3 is the number of channels in each chamber.

[0100] 8) Select the same electrode distance T: Determine the size of the same electrode distance according to the coal quality and ash content parameters, and select it in the range of 350mm to 500mm, preferably 400mm to 450mm;

[0101] 9) Calculate the effective width of the electric field in a single chamber: B = N³ × T;

[0102] 10) Calculate the flue gas velocity inside the electric field by combining the flue gas volume Q, electrode height H, number of chambers K, and number of columns N1, and compare it with the flue gas velocity in the existing electrostatic precipitator selection and design specifications. If it does not meet the requirements, correct the calculated flue gas velocity according to the characteristics of the electrostatic precipitator model used, and recalculate it according to step 15. The flue gas velocity calculation formula is as follows:

[0103]

[0104] Based on the above calculations, the model and specifications of the electrostatic precipitator are basically determined. However, in order to ensure the long-term efficient and stable operation of the electrostatic precipitator, its length-to-height ratio needs to be limited to prevent the problem of excessive emissions due to insufficient flue gas residence time caused by an excessively short precipitator. The length-to-height ratio must be ≥1.

[0105] As can be seen from the above technical solution, this embodiment provides a method for selecting the model of an electrostatic precipitator. This method is applied to electronic equipment and specifically involves obtaining multiple flue gas characteristic parameters; determining the technical form based on the multiple flue gas characteristic parameters; calculating the required dust collection area of ​​the electrostatic precipitator based on the flue gas characteristic parameters; and selecting the appropriate model of the electrostatic precipitator based on the dust collection area, one or more basic parameters from the multiple flue gas characteristic parameters, and the technical form. This application selects a suitable electrostatic precipitator based on the actual needs of industrial dust removal scenarios, avoiding the inherent defects of relying on subjective experience for selection, thereby solving the problem that the emissions of industrial dust removal equipment selected by existing design methods cannot meet environmental protection requirements.

[0106] The above process will be further explained below through specific implementation methods:

[0107] Example 1:

[0108] A 2×480t / h pulverized coal boiler (equivalent to a 135MW-150MW unit) equipped with an electrostatic precipitator is experiencing excessive emissions at its outlet due to changes in environmental policies and aging equipment, failing to meet local environmental requirements. The electrostatic precipitator needs to be upgraded. After the upgrade, the chimney outlet emissions should be ≤5mg / m³. 3 Dust collector outlet ≤25mg / m³ 3 The original electrostatic precipitator adopted a single-row, double-chamber, four-field structure. Due to the limited space in front and behind the electrostatic precipitator, it is impossible to expand or modify it. Therefore, new technologies and processes need to be adopted to meet the outlet emission requirements under the existing four-field structure.

[0109] The flue gas characteristics of this project are shown in Table 3:

[0110]

[0111]

[0112] Table 3

[0113] The coal quality parameters are shown in Table 4:

[0114]

[0115] Table 4

[0116] Ash content parameters are shown in Table 5:

[0117]

[0118] Table 5

[0119] Equipment performance requirements: When the boiler is running at normal full load, the emission from the electrostatic precipitator outlet must be <25mg / Nm³. 3 Dust removal efficiency ≥99.95%.

[0120] Specific selection steps:

[0121] (1) Determine the characteristics of coal and ash content of the electrostatic precipitator; determine the flue gas characteristic parameters, including inlet dust concentration, inlet flue gas volume, inlet flue gas temperature, coal consumption, etc.; determine the outlet dust concentration and efficiency requirements, etc.

[0122] Based on Tables 3-5, the coal quality, ash content parameters, and other basic design parameters required in step 1 are obtained.

[0123] (2) Based on the coal quality parameters and ash content parameters, compare them with Table 1 and select the corresponding ω. k Values; By comparing the coal quality parameters and ash content parameters in Tables 4 and 5 with those in Table 1, the actual coal type is within the range where dust collection performance is difficult, and the apparent driving velocity ω k It is approximately 35 cm / s.

[0124] (3) Based on the relevant parameters in step 1, determine whether the technology to be used is conventional technology or coupling technology. Since the space in front and behind this project is limited and there is no room for expansion and efficiency improvement, conventional technology cannot meet the efficiency improvement requirements. New technologies and processes need to be adopted. Therefore, coupling technology is adopted.

[0125] (4) Calculate the efficiency improvement factor K1 of the condensation airflow distribution plate; the measured Δδ of this project is 1.3, θ is 56.2°, the opening ratio W1% is 30%, and the design value of D is 0.065m. Substitute these values ​​into the above formula to calculate K1 = 0.803.

[0126] (5) Calculate the efficiency improvement factor K2 of the multi-effect pretreatment system; the orifice plate opening rate W1% of this project is 30%, θ is 56.2°, and W2% is 10% as measured. Substitute these values ​​into the above formula to calculate K2 = 0.942.

[0127] (6) Calculate the efficiency improvement factor K3 of the dust suppression device; In this project, W3% was measured to be 0.438 and W4% was measured to be 0.394. Substitute them into the above formula to calculate K3 = 0.832.

[0128] (7) Calculate the efficiency improvement factor K4 of the vertical dust suppression and collection device at the tail of each electric field; In this project, W5% is the opening rate of the vertical dust suppression and collection device, which is 30% in this project, C is 40mm, the electrode plate is BE plate, the width E is 475mm, F is the height of the windproof hook of BE plate, which is 25mm. Substitute into the above formula to calculate K4 = 0.812.

[0129] (8) Calculate the efficiency improvement factor K5 of the small shut-off isolation rapping system; In this project, the design height of H1 is 165mm, α is 1.95°, the design height of H2 is 60mm, β is 8.5°, T = 400mm, W6% = 98%, W7% = 60%, and substitute them into the above formula to calculate K5 = 0.91.

[0130] (9) Select the correction factor K6 according to the type of high voltage power supply; the entire electric field of this project adopts high frequency power supply technology, and K6 is 0.97.

[0131] (10) Calculate the efficiency improvement factor K7 of the new polarity of the front-stage electric field; the front-stage electric field of this project adopts needle wire, K7 = 1.

[0132] (11) Calculate the efficiency improvement factor K8 of the new type of pole matching in the intermediate electric field; the intermediate electric field of this project adopts needle wire, K8 = 1.

[0133] (12) Calculate the efficiency improvement factor K9 of the novel pole matching of the subsequent electric field; the subsequent electric field in this project adopts CS12C flexible line, and the actual operating secondary current is about 300mA, which is about 4.5mA when converted to the volt-ampere characteristic curve. Figure 2 The voltage-current characteristic curves show that U4 is approximately 53kV and U6 is approximately 58kV. Referring to Table 2, δ4 is 0.362 and δ6 is 0.312. Substituting these values ​​into the above formula, we calculate K9 = 1.224.

[0134] (13) Based on the revised dust collector efficiency formula, calculate the total dust collection area A required for the electrostatic precipitator, and use the influencing factors determined by the above calculations. With a dust collection efficiency of 99.95%, select ω... k Substitute parameters such as flue gas volume into the above formula:

[0135]

[0136] The calculated specific dust collection area A / Q = 108.09 m² 2 / m 3 / s.

[0137] (14) Calculate the required dust collection area A for the electrostatic precipitator according to the revised calculation formula; the flue gas volume parameter for this project is Q = 1063616 m³ / h. 3 / h=295.449m 3 / s, combined with the specific dust collection area A / Q value in (13), A = 31935.08m² is calculated. 2 .

[0138] (15) Based on the dust collection area A calculated above and combined with basic parameters such as flue gas volume Q and flue gas temperature, select a suitable electrostatic precipitator model and specifications:

[0139] 1) This project is a 480t / h pulverized coal boiler, which is equivalent to the size of a 135MW to 150MW unit. Therefore, the dust collector is designed in a single row, which is consistent with the single row design before the modification. N1=1;

[0140] 2) The number of rooms selected for this project is 2, consistent with the previous design, K = 2;

[0141] 3) Selection of plate height H: Since the unit size of this project is approximately 135MW to 150MW, which is half the size of a 300MW unit, the plate height is selected as 15m.

[0142] 4) Selection of effective length L of a single electric field: Since this project is a renovation project, the length of the electric field has been determined. Based on the length of the electric field, 9 plates are arranged in each electric field. BE plates are used as the plates. Therefore, the effective length of a single electric field L = 0.475 * 9 = 4.275 m;

[0143] 5) Selection of electric field number N2: Since there is no space for expansion before and after this project, the original dust collector will be hollowed out and modified. The original dust collector is a 4-electric field structure, so N2 = 4;

[0144] 6) Based on the above selections, N1 = 1, K = 2, H = 15m, the total effective length of the electric field is...

[0145] A = 30782.82m 2 / m 3 / s, substituting into formula (11), the calculation is as follows:

[0146]

[0147] The calculation yields N3 = 31.12, which is rounded down to 31.

[0148] 7) Selection of the same pole distance T: Based on the coal quality and ash content of this project, the same pole distance is selected as 400mm;

[0149] 8) Effective width of the electric field in a single chamber: B = N³ × T = 3¹ × 0.4 = 12.4 m;

[0150] 9) Substitute the calculated flue gas velocity into the formula:

[0151]

[0152] The calculated flue gas velocity V = 0.794 m / s for this project meets the design requirements.

[0153] Calculate the length-to-height ratio:

[0154] It meets the design requirements.

[0155] This project adopts BEX type electrostatic precipitator products. According to the electrostatic precipitator industry standard JB / T5910-2013, the model designation method of electrostatic precipitator is as follows: BEX 4×4.275(400)—2×12.4—15.

[0156] Example 2:

[0157] For a newly built 2×660MW generating unit equipped with an electrostatic precipitator, due to site constraints, the total column length of the electrostatic precipitator (along the airflow direction) should not exceed 27m, the total length from the inlet flange to the outlet flange should not exceed 35m, and the center-to-center distance between two precipitators for one boiler should not exceed 40m. Conventional technologies cannot meet these requirements, necessitating the adoption of new technologies and processes to satisfy the outlet emission requirements.

[0158] The coal quality and ash composition analysis data for this phase of the project are shown in Table 6:

[0159]

[0160] Table 6

[0161] The inlet flue gas volume for each dust collector is shown in Table 7:

[0162]

[0163]

[0164] Other requirements: This project requires an additional 10% margin for flue gas volume and an additional 10°C for flue gas temperature based on the design flue gas volume and temperature. Even when one of the power supply areas is shut down, the outlet emission requirements still need to be met.

[0165] Specific selection steps:

[0166] (1) Determine the characteristics of coal and ash content of the electrostatic precipitator; determine the flue gas characteristic parameters, including inlet dust concentration, inlet flue gas volume, inlet flue gas temperature, etc.; determine the outlet dust concentration and efficiency requirements, etc.; based on Tables 6 and 7, obtain the coal quality, ash content parameters and other basic design parameters required in step 1.

[0167] (2) Based on the coal quality parameters and ash content parameters, compare them with Table 1 and select the corresponding ω. k value;

[0168] By comparing the coal quality parameters and ash content parameters in Table 6 with those in Table 1, the designed coal type falls within the range where dust collection performance is easy, and the apparent driving velocity ω k The apparent driving velocity ω is 55 cm / s, indicating that the coal type has a dust collection performance of average or above. kThe dust collector speed is approximately 38 cm / s. Considering that the dust collector needs to meet the performance requirements under both coal quality conditions, the selection of the model is based on the verification coal type.

[0169] (3) Based on the relevant parameters in step 1, determine whether the technology to be used is conventional technology or coupling technology. Due to the limited space of the project site, and the requirement to meet the flue gas volume margin plus 10% and the flue gas temperature margin plus 10℃, while stopping one power supply zone still meets the outlet emission requirements, the preliminary calculation shows that conventional technology cannot meet the outlet emission requirements, and new technologies and processes need to be adopted. Therefore, it is determined that coupling technology will be adopted.

[0170] (4) Calculate the efficiency improvement factor K1 of the condensation airflow distribution plate; According to the CFD airflow simulation, the project has Δδ of about 1, θ of 50°, opening ratio W1% of 30%, and D design value of 0.07m. Substitute into formula (2) to calculate K1 = 0.88.

[0171] (5) Calculate the efficiency improvement factor K2 of the multi-effect pretreatment system; the orifice plate opening rate W1% of this project is 30%, θ is 50°, and the simulated W2% is about 7.26%. Substitute these values ​​into the above formula to calculate K2 = 0.986.

[0172] (6) Calculate the efficiency improvement factor K3 of the dust suppression device; In this project, W3% is simulated as 0.482 and W4% is measured as 0.445. Substitute these values ​​into the above formula to calculate K3 = 0.927.

[0173] (7) Calculate the efficiency improvement factor K4 of the vertical dust suppression and collection device at the tail of each electric field; this technology was not used in this project, so K4 = 1.

[0174] (8) Calculate the efficiency improvement factor K5 of the small shut-off isolation vibration system; In this project, the design height of H1 is 170mm, α is 1.84°, the design height of H2 is 60mm, β is 8.5°, T = 400mm, W6% = 98%, W7% = 60%, and substitute into the above formula to calculate K5 = 0.916.

[0175] (9) Select the correction factor K6 according to the type of high voltage power supply; the entire electric field of this project adopts high frequency power supply technology, and K6 is 0.97.

[0176] (10) Calculate the efficiency improvement factor K7 of the new polarity of the front-stage electric field; the front-stage electric field of this project adopts needle wire, K7 = 1.

[0177] (11) Calculate the efficiency improvement factor K8 of the new type of pole matching in the intermediate electric field; the intermediate electric field of this project adopts needle wire, K8 = 1.

[0178] (12) Calculate the efficiency improvement factor K9 of the novel pole matching of the subsequent electric field; the subsequent electric field in this project adopts CS12C flexible line, and the actual operating secondary current is about 260mA, which is converted to about 4.1mA on the volt-ampere characteristic curve. Figure 2 The voltage-current characteristic curves show that U4 is approximately 52kV and U6 is approximately 56kV. Referring to Table 2, δ4 is 0.362 and δ6 is 0.312. Substituting these values ​​into formula (9), we can calculate K9 = 1.209.

[0179] (13) Based on the revised dust collector efficiency formula, calculate the total dust collection area A required for the electrostatic precipitator, and use the influence factors determined by the above calculations. With a dust collection efficiency of 99.939%, select ω... k Substitute parameters such as flue gas volume into the above formula for calculation:

[0180]

[0181] The calculated dust collection area A / Q is 111.89 m². 2 / m 3 / s.

[0182] According to the additional requirements of this project, even when one power supply zone is shut down, the emission requirements must still be met. The specific dust collection area calculated above is the specific dust collection area when one power supply zone is not shut down. Due to the low emission levels, this project adopts a 5-field structure, with a total of 10 power supply zones for the entire electrostatic precipitator. This means that even when operating 9 power supply zones, the emission requirements still need to be met. Based on this ratio, the specific dust collection area under the condition of not shutting down any power supply zone is calculated to be 124.32 m². 2 / m 3 / s.

[0183] (14) Calculate the required dust collection area A for the electrostatic precipitator according to the revised calculation formula;

[0184] The flue gas volume parameter for this project is Q = 3102696 m³ / h. 3 / h=861.86m 3 / s, considering that this project still needs to meet the requirements under the conditions of increasing the flue gas volume by 10% and increasing the flue gas temperature by 10℃, the flue gas volume under the dual-increase condition is Q = 3490340m³ / s. 3 / h=969.54m 3 / s, combined with the specific dust collection area A / Q value in (13), A = 120533.21m 2

[0185] (15) Based on the dust collection area A calculated above and combined with basic parameters such as flue gas volume Q and flue gas temperature, select a suitable electrostatic precipitator model and specifications:

[0186] 1) This project is a 660MW unit, which is a 600MW-class unit. Therefore, the dust collector is designed with a double row, N1=2;

[0187] 2) Next, select the number of chambers K for each column (each unit) of electrostatic precipitator: This project is a 600MW unit, so the number of chambers K is selected as 2, K = 2;

[0188] 3) Selection of plate height H: This project is a 600MW unit, and the plate height is selected as 15m, i.e., H = 15m;

[0189] 4) Selection of effective length L of a single electric field: Due to site constraints, the total length of the column spacing of the electrostatic precipitator (along the airflow direction) should not exceed 27m. Based on the electric field length, 10 plates are arranged in each electric field, and BE plates are used as the electrodes. Therefore, the effective length L of a single electric field is 0.475 * 10 = 4.75m.

[0190] 5) Selection of electric field number N2: This project requires an outlet emission of ≤15mg / Nm³. 3 The requirements are relatively high. Therefore, in order to ensure that the dust has sufficient residence time in the dust collector, this project adopts a 5-field structure, so N2 = 5.

[0191] 6) Based on the above selections, N1 = 2, K = 2, H = 15m, the total effective length of the electric field is...

[0192] A = 120533.21m 2 / m 3 / s, substituting into the above formula, the calculation is as follows:

[0193]

[0194] The calculated value is N3 = 42.29, which is rounded down to 43.

[0195] 7) Selection of the same pole distance T: Based on the coal quality and ash content of this project, the same pole distance is selected as 400mm;

[0196] 8) Effective width of the electric field in a single chamber: B = N³ × T = 4³ × 0.4 = 17.2 m;

[0197] 9) Substitute the calculated flue gas velocity into the formula:

[0198]

[0199] The calculated flue gas velocity V = 0.939 m / s for this project meets the design requirements.

[0200] Calculate the length-to-height ratio:

[0201] It meets the design requirements.

[0202] Given the additional conditions of this project, the total length of the column spacing of the electrostatic precipitator (along the airflow direction) should not exceed 27m, the total length from the inlet flange to the outlet flange of the electrostatic precipitator should not exceed 35m, and the center distance between the two precipitators of one boiler should not exceed 40m.

[0203] Verify the parameters after selection:

[0204] Verification of total column spacing: Each electric field in this project uses a structure of 10 anode plates, so the column spacing of a single electric field is 5.33m, and the total column spacing is 26.65m, which meets the requirement of not exceeding 27m.

[0205] Electrostatic precipitator inlet and outlet horn length verification: Since the total length of the inlet and outlet flanges is no more than 35m, the total length of the inlet and outlet horns is no more than 8m. According to design experience, a length of 4m for both inlet and outlet horns can meet the requirements.

[0206] Center-to-center distance verification of two dust collectors: Center-to-center distance of two electrostatic precipitators = 2 × width of single-chamber electric field + width of intermediate aisle. Width of single-chamber electric field = B + 0.5 = 17.2 + 0.5 = 17.7m. The width of intermediate aisle is empirically estimated to be about 2.5m to 4m. Based on this calculation, the center-to-center distance of the two electrostatic precipitators is about 37.9m to 39.4m, which meets the condition of not exceeding 40m and can meet the requirements.

[0207] This project adopts BEX type electrostatic precipitator products. According to the electrostatic precipitator industry standard JB / T5910-2013, the model designation of electrostatic precipitators is as follows: 2BEX 5×4.75(400)—2×17.2—15.

[0208] It should be understood that the steps described in the method embodiments of this disclosure may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of this disclosure is not limited in this respect.

[0209] Computer program code for performing the operations of this disclosure can be written in one or more programming languages ​​or a combination thereof, including but not limited to object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer.

[0210] Figure 4 This is a block diagram of a model selection device for an electrostatic precipitator according to an embodiment of this application.

[0211] like Figure 4 As shown, the model selection device provided in this embodiment is applied to electronic equipment to select a model of electrostatic precipitator suitable for a specific production scenario. This electronic equipment can be understood as a computer, server, or cloud platform with data computing and information processing capabilities. Specifically, the model selection device includes a parameter acquisition module 10, a technology determination module 20, a parameter calculation module 30, and a selection execution module 40.

[0212] The parameter acquisition module is used to acquire multiple flue gas characteristic parameters.

[0213] Multiple flue gas characteristic parameters include some or all of the following: inlet dust concentration, inlet flue gas flow rate, inlet flue gas temperature, coal consumption, outlet dust concentration, dust removal efficiency requirements, coal quality parameters, and ash content parameters.

[0214] The technology determination module is used to determine the technology form based on multiple flue gas characteristic parameters.

[0215] The technical forms involved in this application are either conventional or coupled technical forms. Based on specific needs, this application has selected the coupled technical form.

[0216] The parameter calculation module is used to calculate the required dust collection area for the electrostatic precipitator based on the flue gas characteristic parameters.

[0217] The technical details here have been described in detail above and will not be repeated here.

[0218] The selection execution module is used to select a model based on the dust collection area and multiple flue gas characteristic parameters.

[0219] The technical details here have been described in detail above and will not be repeated here.

[0220] As can be seen from the above technical solution, this embodiment provides a method for selecting the model of an electrostatic precipitator. This method is applied to electronic equipment and specifically involves obtaining multiple flue gas characteristic parameters; determining the technical form based on the multiple flue gas characteristic parameters; calculating the required dust collection area of ​​the electrostatic precipitator based on the flue gas characteristic parameters; and selecting the appropriate model of the electrostatic precipitator based on the dust collection area, one or more basic parameters from the multiple flue gas characteristic parameters, and the technical form. This application selects a suitable electrostatic precipitator based on the actual needs of industrial dust removal scenarios, avoiding the inherent defects of relying on subjective experience for selection, thereby solving the problem that the emissions of industrial dust removal equipment selected by existing design methods cannot meet environmental protection requirements.

[0221] The units described in the embodiments of this disclosure can be implemented in software or in hardware. The name of a unit does not necessarily limit the unit itself; for example, the first acquisition unit can also be described as "a unit that acquires at least two Internet Protocol addresses".

[0222] The functions described above in this document can be performed, at least in part, by one or more hardware logic components. For example, exemplary types of hardware logic components that can be used, without limitation, include: Field Programmable Gate Arrays (FPGAs), Application-Specific Integrated Circuits (ASICs), Application Standard Products (ASSPs), System-on-Chip (SoCs), Complex Programmable Logic Devices (CPLDs), and so on.

[0223] Figure 5 This is a block diagram of an electronic device according to an embodiment of this application.

[0224] The following is for reference. Figure 5 This document illustrates a structural diagram suitable for implementing the electronic device in the embodiments of this disclosure. The terminal device in the embodiments of this disclosure may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. This electronic device is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this disclosure.

[0225] The electronic device may include a processing unit (e.g., a central processing unit, a graphics processing unit, etc.) 501, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 502 or a program loaded from an input device 506 into a random access memory (RAM) 503. The RAM also stores various programs and data required for the operation of the electronic device. The processing unit, ROM, and RAM are interconnected via a bus 504. An input / output (I / O) interface 505 is also connected to the bus 504.

[0226] Typically, the following devices can be connected to the I / O interface: input devices including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 507 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 508 including, for example, magnetic tapes, hard disks, etc.; and communication devices 509. Communication device 509 allows the electronic device to communicate wirelessly or wiredly with other devices to exchange data. Although electronic devices with various devices are shown in the figures, it should be understood that it is not required to implement or possess all of the devices shown. More or fewer devices may be implemented or possessed alternatively.

[0227] This application provides an embodiment of a computer-readable storage medium.

[0228] The aforementioned computer-readable storage medium is applied to an electronic device and carries one or more computer programs. When these programs are executed by the electronic device, the device acquires multiple flue gas characteristic parameters; determines the technical form based on these parameters; calculates the required dust collection area for the electrostatic precipitator based on the parameters; and selects the appropriate electrostatic precipitator model based on the dust collection area, one or more basic parameters from the multiple flue gas characteristic parameters, and the technical form. This application selects a suitable electrostatic precipitator based on the actual needs of industrial dust removal scenarios, avoiding the inherent defects of relying on subjective experience for selection, thereby solving the problem that the emissions of industrial dust removal equipment selected by existing design methods cannot meet environmental protection requirements.

[0229] It should be noted that the computer-readable medium described above in this disclosure can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof.

[0230] In this disclosure, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in connection with an instruction execution system, apparatus, or device. In this disclosure, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to: wires, optical fibers, RF (radio frequency), etc., or any suitable combination thereof.

[0231] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0232] The technical solution provided by the present invention has been described in detail above. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for selecting the model of an electrostatic precipitator, applied to electronic equipment, characterized in that, The model selection method includes the following steps: Obtain multiple flue gas characteristic parameters; The technical form is determined based on the aforementioned multiple flue gas characteristic parameters; Calculate the required dust collection area for the electrostatic precipitator based on the aforementioned multiple flue gas characteristic parameters; The required electrostatic precipitator model is obtained by selecting based on the dust collection area, one or more basic parameters among the multiple flue gas characteristic parameters, and the technical form.

2. The model selection method as described in claim 1, characterized in that, The multiple flue gas characteristic parameters include some or all of the following: inlet dust concentration, inlet flue gas flow rate, inlet flue gas temperature, coal consumption, outlet dust concentration, and dust removal efficiency requirements.

3. The model selection method as described in claim 1, characterized in that, The technology referred to is either a conventional technology or a coupled technology.

4. The model selection method as described in claim 1, characterized in that, Calculating the required dust collection area for the electrostatic precipitator based on the flue gas characteristic parameters includes the following steps: The apparent infeed velocity is selected from the existing electrostatic precipitator selection and design specifications based on the flue gas characteristic parameters. Calculate multiple efficiency improvement influencing factors and high-voltage power supply selection correction coefficients; The dust collector efficiency formula is determined based on the multiple efficiency-improving influencing factors, the correction coefficient, and the apparent driving velocity. Calculate the required dust collection area for the electrostatic precipitator based on the dust collector efficiency formula.

5. The model selection method as described in claim 4, characterized in that, The multiple efficiency-enhancing factors include the efficiency-enhancing factors of the condensing airflow distribution plate, the multi-effect pretreatment system, the flow-guiding dust suppression device, the vertical dust suppression and collection devices at the tail of each electric field, the small-shutdown isolation rapping system, the high-voltage power supply selection correction coefficient, the efficiency-enhancing factors of the new polarity configuration of the front-stage electric field, the efficiency-enhancing factors of the new polarity configuration of the intermediate electric field, and the efficiency-enhancing factors of the new polarity configuration of the rear-stage electric field.

6. The model selection method as described in claim 5, characterized in that, The dust removal efficiency formula is: Wherein, η is the dust removal efficiency of the electrostatic precipitator, K1 is the efficiency-enhancing factor of the condensing airflow distribution plate, K2 is the efficiency-enhancing factor of the multi-effect pretreatment system, K3 is the efficiency-enhancing factor of the flow-guiding dust suppression device, K4 is the efficiency-enhancing factor of the vertical dust suppression and collection device at the tail of each electric field, K5 is the efficiency-enhancing factor of the small-shutdown isolation rapping system, K6 is the high-voltage power supply selection correction coefficient, K7 is the efficiency-enhancing factor of the novel polarity configuration of the front-stage electric field, K8 is the efficiency-enhancing factor of the novel polarity configuration of the intermediate electric field, K9 is the efficiency-enhancing factor of the novel polarity configuration of the rear-stage electric field, e is the natural constant, and ω k The apparent driving velocity is in m / s, and A is the dust collection area in m². 2 Q is the flue gas inlet flow rate, in m³ / s. 3 / s.

7. The model selection method as described in claim 1, characterized in that, Based on the dust collection area and one or more basic parameters among the multiple flue gas characteristic parameters, as well as the technical form, the required electrostatic precipitator model is selected, including the following steps: Select the number of columns required for each boiler electrostatic precipitator, the number of chambers required for each column of electrostatic precipitators, the electrode height required for each electrostatic precipitator, the effective length of a single electric field, and the number of electric fields required for each electrostatic precipitator; The number of electric field channels is calculated based on the number of columns, the number of chambers, the height of the electrode plate, the effective length of a single electric field, and the number of electric fields. Select the same pole spacing and the effective width of the single-cell electric field; The required model of the electrostatic precipitator is obtained by combining the dust collection area, the electrode plate height, the number of chambers, and the number of columns.

8. A model selection device for electrostatic precipitators, applied to electronic equipment, characterized in that, The model selection device includes: The parameter acquisition module is configured to acquire multiple flue gas characteristic parameters; The technology determination module is configured to determine the technology form based on the plurality of flue gas characteristic parameters; The parameter calculation module is configured to calculate the required dust collection area of ​​the electrostatic precipitator based on the multiple flue gas characteristic parameters. The selection execution module is configured to select the model of the required electrostatic precipitator based on the dust collection area, one or more basic parameters among the plurality of flue gas characteristic parameters, and the technical form.

9. An electronic device, characterized in that, The electronic device includes at least one processor and a memory connected to the processor, wherein: The memory is used to store computer programs or instructions; The processor is used to execute the computer program or instructions to enable the electronic device to implement the model selection method as described in any one of claims 1 to 7.

10. A computer-readable storage medium for use in electronic devices, characterized in that, The storage medium carries one or more computer programs that can be executed by the electronic device to enable the electronic device to implement the model selection method as described in any one of claims 1 to 7.

Images